Add glGetActiveUniformBlockiv to GPU command buffer.

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 9712 matching lines @@
     return error::kNoError;
   }
   result->success = 1;  // true.
   result->size = uniform_info->size;
   result->type = uniform_info->type;
   Bucket* bucket = CreateBucket(name_bucket_id);
   bucket->SetFromString(uniform_info->name.c_str());
   return error::kNoError;
 }
 
+error::Error GLES2DecoderImpl::HandleGetActiveUniformBlockiv(
+    uint32 immediate_data_size, const void* cmd_data) {
+  if (!unsafe_es3_apis_enabled())
+    return error::kUnknownCommand;
+  const gles2::cmds::GetActiveUniformBlockiv& c =
+      *static_cast<const gles2::cmds::GetActiveUniformBlockiv*>(cmd_data);
+  GLuint program_id = c.program;
+  GLuint index = static_cast<GLuint>(c.index);
+  GLenum pname = static_cast<GLenum>(c.pname);
+  Program* program = GetProgramInfoNotShader(
+      program_id, "glGetActiveUniform");
+  if (!program) {
+    return error::kNoError;
+  }
+  GLuint service_id = program->service_id();
+  GLint link_status = GL_FALSE;
+  glGetProgramiv(service_id, GL_LINK_STATUS, &link_status);
+  if (link_status != GL_TRUE) {
+    LOCAL_SET_GL_ERROR(GL_INVALID_OPERATION,
+        "glGetActiveActiveUniformBlockiv", "program not linked");
+    return error::kNoError;
+  }
+  LOCAL_COPY_REAL_GL_ERRORS_TO_WRAPPER("GetActiveUniformBlockiv");
+  GLsizei num_values = 1;
+  if (pname == GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES) {
+    GLint num = 0;
+    glGetActiveUniformBlockiv(
+        service_id, index, GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS, &num);
+    GLenum error = glGetError();
+    if (error != GL_NO_ERROR) {
+      // Assume this will the same error if calling with pname.
+      LOCAL_SET_GL_ERROR(error, "GetActiveUniformBlockiv", "");
+      return error::kNoError;
+    }
+    num_values = static_cast<GLsizei>(num);
+  }
+  typedef cmds::GetActiveUniformBlockiv::Result Result;
+  Result* result = GetSharedMemoryAs<Result*>(
+      c.params_shm_id, c.params_shm_offset, Result::ComputeSize(num_values));
+  GLint* params = result ? result->GetData() : NULL;
+  if (params == NULL) {
+    return error::kOutOfBounds;
+  }
+  // Check that the client initialized the result.
+  if (result->size != 0) {
+    return error::kInvalidArguments;
+  }
+  glGetActiveUniformBlockiv(service_id, index, pname, params);
+  GLenum error = glGetError();
+  if (error == GL_NO_ERROR) {
+    result->SetNumResults(num_values);
+  } else {
+    LOCAL_SET_GL_ERROR(error, "GetActiveUniformBlockiv", "");
+  }
+  return error::kNoError;
+}
+
 error::Error GLES2DecoderImpl::HandleGetActiveUniformBlockName(
     uint32 immediate_data_size, const void* cmd_data) {
   if (!unsafe_es3_apis_enabled())
     return error::kUnknownCommand;
   const gles2::cmds::GetActiveUniformBlockName& c =
       *static_cast<const gles2::cmds::GetActiveUniformBlockName*>(cmd_data);
   GLuint program_id = c.program;
   GLuint index = c.index;
   uint32 name_bucket_id = c.name_bucket_id;
   typedef cmds::GetActiveUniformBlockName::Result Result;
@@ skipping 2045 matching lines @@
   }
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu